121122413251 has 24 divisors (see below), whose sum is σ = 143666922240. Its totient is φ = 100026343440.

The previous prime is 121122413233. The next prime is 121122413261. The reversal of 121122413251 is 152314221121.

It is not a de Polignac number, because 121122413251 - 2⁹ = 121122412739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121122413261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1487370 + ... + 1566688.

It is an arithmetic number, because the mean of its divisors is an integer number (5986121760).

Almost surely, 2^121122413251 is an apocalyptic number.

121122413251 is a deficient number, since it is larger than the sum of its proper divisors (22544508989).

121122413251 is an equidigital number, since it uses as much as digits as its factorization.

121122413251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79615 (or 79584 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

Adding to 121122413251 its reverse (152314221121), we get a palindrome (273436634372).

The spelling of 121122413251 in words is "one hundred twenty-one billion, one hundred twenty-two million, four hundred thirteen thousand, two hundred fifty-one".